Sydney must confront her mother, who tells a clue about "some Rambaldi artifacts" in Zurich, but it was a trap to capture Jack. As Sloane keeps Jack hostage, Vaughn and Sydney go to Stockholm to capture Sark, who reveals the hideout in Mexico City. Meanwhile, Tippin discovers that Francie is in fact a "double" and is the one who framed him...—RealLiveClaude
In this stunning season finale, Sydney Bristow gets one last chance to bring Arvin Sloane to justice... courtesy of the person she least expects: her mother. But this is only the beginning of a series of spiraling revelations - ending with a jaw-dropping cliffhanger that alters Sydney's life forever.—Anonymous